JPS60149229U - FM demodulation circuit - Google Patents

FM demodulation circuit

Info

Publication number
JPS60149229U
JPS60149229U JP3485184U JP3485184U JPS60149229U JP S60149229 U JPS60149229 U JP S60149229U JP 3485184 U JP3485184 U JP 3485184U JP 3485184 U JP3485184 U JP 3485184U JP S60149229 U JPS60149229 U JP S60149229U
Authority
JP
Japan
Prior art keywords
demodulation circuit
output
multiplier
level
phase shifter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3485184U
Other languages
Japanese (ja)
Other versions
JPH0424648Y2 (en
Inventor
和男 黒田
Original Assignee
パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP3485184U priority Critical patent/JPS60149229U/en
Publication of JPS60149229U publication Critical patent/JPS60149229U/en
Application granted granted Critical
Publication of JPH0424648Y2 publication Critical patent/JPH0424648Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

゛第１図は従来のＦＭ復調回路のブロック図、第２図は
本考案の一実施例の構成を示すブロック図である。 １・・・バンドパスフィルタ、２・・・リミッタ、３・
・・移相器、４・・・乗算器、６・・・ローパスフィル
タ、７　　　、゛・・・電圧制御増幅器、８・・・直流
レベル検出回路。1 is a block diagram of a conventional FM demodulation circuit, and FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 1...Band pass filter, 2...Limiter, 3.
... Phase shifter, 4... Multiplier, 6... Low pass filter, 7, ゛... Voltage control amplifier, 8... DC level detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ’　　　ＦＭ信号を入力とする移相器と、ＦＭ信号き移
相器の出力とを乗算する乗算器とを備えてなるＦＭ復調
回路において、乗算器出力の直流レベルを検出する直流
レベル検出回路と、直流レベル検出回路の出力により乗
算器出力の直流レベルを一定に維持させる手段とを備え
てなることを特徴とするＦＭ復調回路。　　　　　　　
　　゛' In an FM demodulation circuit comprising a phase shifter that receives an FM signal as input and a multiplier that multiplies the output of the phase shifter with the FM signal, a DC level detection circuit that detects the DC level of the multiplier output; , means for maintaining the DC level of the multiplier output constant using the output of the DC level detection circuit.
゛
JP3485184U 1984-03-13 1984-03-13 FM demodulation circuit Granted JPS60149229U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3485184U JPS60149229U (en) 1984-03-13 1984-03-13 FM demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3485184U JPS60149229U (en) 1984-03-13 1984-03-13 FM demodulation circuit

Publications (2)

Publication Number Publication Date
JPS60149229U true JPS60149229U (en) 1985-10-03
JPH0424648Y2 JPH0424648Y2 (en) 1992-06-11

Family

ID=30538605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3485184U Granted JPS60149229U (en) 1984-03-13 1984-03-13 FM demodulation circuit

Country Status (1)

Country Link
JP (1) JPS60149229U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03187606A (en) * 1989-12-18 1991-08-15 Matsushita Electric Ind Co Ltd Fm demodulator
JPH0468981A (en) * 1990-07-09 1992-03-04 Matsushita Electric Ind Co Ltd Fm demodulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423459A (en) * 1977-07-25 1979-02-22 Nippon Telegr & Teleph Corp <Ntt> Delay detector
JPS5486935U (en) * 1977-11-28 1979-06-20
JPS57201308A (en) * 1981-06-03 1982-12-09 Mitsubishi Electric Corp Frequency demodulating circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423459A (en) * 1977-07-25 1979-02-22 Nippon Telegr & Teleph Corp <Ntt> Delay detector
JPS5486935U (en) * 1977-11-28 1979-06-20
JPS57201308A (en) * 1981-06-03 1982-12-09 Mitsubishi Electric Corp Frequency demodulating circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03187606A (en) * 1989-12-18 1991-08-15 Matsushita Electric Ind Co Ltd Fm demodulator
JPH0468981A (en) * 1990-07-09 1992-03-04 Matsushita Electric Ind Co Ltd Fm demodulator

Also Published As

Publication number Publication date
JPH0424648Y2 (en) 1992-06-11

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